Start with their twitter account.
Approach Canadian media (Globe and Mail, CBC etc), if they are interested in covering your story.
Write to your MP, if you are in Canada.
If possible, ask a mass media to run a story in your home country about perils of Canadian immigration system and its stupidities. Canada seeks more international students, if foreign media is running stories about how shitty their immigration system is for students, it will embarrass right ministers into action. For best results it should be in multiple media : print, social, youtube etc. Send some copies to canadian emabassy in your own country.
From time to time Canadian embassies hold "come to canada" events for students in various countries. If you are really motivated, then in your own country do a picket with pamphlets telling about perils of dealing with IRCC and weirdness of education-cum-work-permit system in Canada.
It will take effort. Quite a bit of effort.